#include "trap.h"
   .set mips32
   .set noat
   .globl main
   .text

main:

# ADD 
    li $t0, 0x000f000f
    li $t1, 0x0000fff1
    add $s0, $t0, $t1               # $s0=0x00100000

    srlv $s0, $s0, 0xb              # $s0=0x80000000

    addi $s0, $s0, 0xffff           # 溢出